12919279 has 4 divisors (see below), whose sum is σ = 12984400. Its totient is φ = 12854160.

The previous prime is 12919273. The next prime is 12919301. The reversal of 12919279 is 97291921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97291921 = 4337 ⋅22433.

It is a cyclic number.

It is not a de Polignac number, because 12919279 - 2³ = 12919271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12919271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32262 + ... + 32659.

It is an arithmetic number, because the mean of its divisors is an integer number (3246100).

Almost surely, 2^12919279 is an apocalyptic number.

12919279 is a deficient number, since it is larger than the sum of its proper divisors (65121).

12919279 is an equidigital number, since it uses as much as digits as its factorization.

12919279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65120.

The product of its digits is 20412, while the sum is 40.

The square root of 12919279 is about 3594.3398559402. The cubic root of 12919279 is about 234.6457859653.

The spelling of 12919279 in words is "twelve million, nine hundred nineteen thousand, two hundred seventy-nine".